major

1. major (adj) — sense 1

Definition: Greater in dignity, rank, importance, significance, or interest.

Example: The US supreme court has ruled unanimously that natural human genes cannot be patented, a decision that scientists and civil rights campaigners said removed a major barrier to patient care and medical innovation.

2. major (adj) — sense 2

Definition: Greater in number, quantity, or extent.

Example: the major part of the assembly

3. major (adj) — sense 3

Definition: Notable or conspicuous in effect or scope.

Example: The building underwent a major renovation.

4. major (noun) — sense 4

Definition: A rank of officer in the army and the US air force, between captain and lieutenant colonel.

Example: He used to be a major in the army.

5. major (noun) — sense 5

Definition: A rank of officer in the army and the US air force, between captain and lieutenant colonel.: An officer in charge of a section of band instruments, used with a modifier.

6. major (noun) — sense 6

Definition: A person of legal age.

7. major (verb) — sense 7

Definition: Used in a phrasal verb: major in.